Curable composition, adhesive, and method of making the same
Assignee3M Innovative Properties Company
InventorsVasav Sahni, Claire Hartmann-Thompson, Jacob P. Johnson, Jacek W. Dziedzic, Thomas E. Augustine
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Abstract
A crosslinkable composition comprises components: (a) at least one polymer comprising isobutylene monomer units: and (b) at least one star polymer represented by the formula SiRn(OSi(R)2-PIB-T)4-n. Each R independently represents a hydrocarbyl group having from 1 to 6 carbon atoms. Each PIB independently represents a divalent polymeric segment comprising isobutylene monomer units. Each T independently represents a monovalent terminal group, and n is 0 or 1. An adhesive comprising a crosslinked reaction product of the crosslinkable composition and a method of making the adhesive are also disclosed.
Claims20
A crosslinkable composition comprising components:
- (a) at least one polymer comprising isobutylene monomer units;
- and
- (b) at least one star polymer represented by the formula
- wherein:
- each R independently represents a hydrocarbyl group having from 1 to 6 carbon atoms;
- each PIB independently represents a divalent polymeric segment comprising isobutylene monomer units;
- each T independently represents a monovalent terminal group;
- and
- n is 0 or 1.
An adhesive comprising a crosslinked reaction product of components comprising:
- (a) at least one polymer comprising isobutylene monomer units;
- and
- (b) at least one star polymer represented by the formula
- wherein:
- each R independently represents a hydrocarbyl group having from 1 to 6 carbon atoms;
- each PIB independently represents a divalent polymeric segment comprising isobutylene monomer units;
- each T independently represents a monovalent terminal group;
- and
- n is 0 or 1.
Dependencies are inferred from the claim text.